I am not sure to what exactly you refer but A&M's
Chris Sewell created such a stat for our use when he
wrote a windows application to handle stats. He defined
it as powers+negs as percent of total buzzes. I am
not totally sure as to the viability of the
statistic, but it is fun to play with.
The stat we
used has no connection to NAQT, but we did calculate
it for all players at the NAQT IFT held last fall in
College Station.